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47dfcb7745
isInductionPHI wants to calculate the stride based on the pointee size. However, this is not possible when the pointee is zero sized. This fixes PR23763. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239143 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
836 B
LLVM
28 lines
836 B
LLVM
; RUN: opt -S -loop-vectorize < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK-LABEL: @fn1
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define void @fn1() {
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entry-block:
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br label %middle
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middle:
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%0 = phi {}* [ %3, %middle ], [ inttoptr (i64 0 to {}*), %entry-block ]
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%1 = bitcast {}* %0 to i8*
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%2 = getelementptr i8, i8* %1, i64 1
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%3 = bitcast i8* %2 to {}*
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%4 = icmp eq i8* %2, undef
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br i1 %4, label %exit, label %middle
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; CHECK: %[[phi:.*]] = phi {}* [ %3, %middle ], [ null, %entry-block ]
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; CHECK-NEXT: %[[bc1:.*]] = bitcast {}* %[[phi]] to i8*
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; CHECK-NEXT: %[[gep:.*]] = getelementptr i8, i8* %[[bc1]], i64 1
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; CHECK-NEXT: %[[bc2:.*]] = bitcast i8* %[[gep]] to {}*
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; CHECK-NEXT: %[[cmp:.*]] = icmp eq i8* %[[gep]], undef
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; CHECK-NEXT: br i1 %[[cmp]],
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exit:
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ret void
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}
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